MOI3D is probably the only intuitive 3D Modeling/CAD program that has gained a lot of command over the years in the 3D NURBS modeling environment. Thanks to its toolkit and flexible functionality, it is easy to adapt to your needs, which many people put into practice.
This is how a cool UI/UX designer describes his design concept: Nikolay Milovidov
Nikolai imagined how MoI3d could look like. More cool videos and information at the Be link